Re: [avr-gcc-list] Moving start of progmem

[Per Arnold Blåsmo]

E. Weddington wrote:

> Per Arnold Blåsmo wrote:
>
> > Start of the text section is normally at 0x00 and the first part of 
> > text is .vectors and then .progmem with .init0...9.
> >
> > .text           0x00000000     *(.vectors)
> > .vectors       0x00000000       0x30
> >                0x00000000                __vectors
> >                0x00000030                __ctors_start = .
> > *(.ctors)
> >                0x00000030                __ctors_end = .
> >                0x00000030                __dtors_start = .
> > *(.dtors)
> >                0x00000030                __dtors_end = .
> > *(.progmem.gcc*)
> > *(.progmem*)
> >                0x00000030                . = ALIGN (0x2)
> > *(.init0)
> > .....
> >
> > I need to make some space between .dtors end and .progmem so that 
> > progmem starts at the second page of the flash.
> >
> > How can I do that? Is there some option to the compiler? I have tried 
> > different --section-start=.init0=0x80 etc. but it does not work as 
> > expected.
>
>
> How is it? Do you have overlapped sections?

Yes, in a way. Certain instructions need to be in the region between the 
end of the vectors and the rest of the first page.

> > Do I have to make a linker script?
> Umm. I'm no expert in the linker area, but you might have to make 
> you're own linker script. I suggest that you take a look at the "ld" 
> user manual. You can find it online:
> <http://sources.redhat.com/binutils/docs-2.15/ld/index.html>
>
> Eric
Yes, I though so :-) Thanks for the link.

Per A.
--
Per Arnold Blåsmo
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